//=============================================================================
//===	Copyright (C) 2001-2005 Food and Agriculture Organization of the
//===	United Nations (FAO-UN), United Nations World Food Programme (WFP)
//===	and United Nations Environment Programme (UNEP)
//===
//===	This program is free software; you can redistribute it and/or modify
//===	it under the terms of the GNU General Public License as published by
//===	the Free Software Foundation; either version 2 of the License, or (at
//===	your option) any later version.
//===
//===	This program is distributed in the hope that it will be useful, but
//===	WITHOUT ANY WARRANTY; without even the implied warranty of
//===	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
//===	General Public License for more details.
//===
//===	You should have received a copy of the GNU General Public License
//===	along with this program; if not, write to the Free Software
//===	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//===
//===	Contact: Jeroen Ticheler - FAO - Viale delle Terme di Caracalla 2,
//===	Rome - Italy. email: GeoNetwork@fao.org
//==============================================================================

package org.fao.geonet.services.thesaurus;

import java.util.Iterator;
import java.util.List;

import jeeves.constants.Jeeves;
import jeeves.interfaces.Service;
import jeeves.server.ServiceConfig;
import jeeves.server.UserSession;
import jeeves.server.context.ServiceContext;
import jeeves.utils.Util;

import org.fao.geonet.GeonetContext;
import org.fao.geonet.constants.Geonet;
import org.fao.geonet.kernel.Thesaurus;
import org.fao.geonet.kernel.ThesaurusManager;
import org.fao.geonet.kernel.KeywordBean;
import org.fao.geonet.kernel.search.KeywordsSearcher;
import org.jdom.Element;

//=============================================================================

/** For editing : removes a concept from a thesaurus. Access is restricted
  */

public class DeleteElement implements Service
{
	//--------------------------------------------------------------------------
	//---
	//--- Init
	//---
	//--------------------------------------------------------------------------

	public void init(String appPath, ServiceConfig params) throws Exception {}

	//--------------------------------------------------------------------------
	//---
	//--- Service
	//---
	//--------------------------------------------------------------------------

	public Element exec(Element params, ServiceContext context) throws Exception
	{

		String sThesaurusName        = Util.getParam(params, "pThesaurus");
		
		GeonetContext gc = (GeonetContext) context.getHandlerContext(Geonet.CONTEXT_NAME);		
		UserSession session = context.getUserSession();
		
		KeywordsSearcher searcher = (KeywordsSearcher)session.getProperty(Geonet.Session.SEARCH_KEYWORDS_RESULT);		
		List keywords = searcher.getSelectedKeywordsInList();
		ThesaurusManager thesaurusMan = gc.getThesaurusManager();
		Thesaurus thesaurus = thesaurusMan.getThesaurusByName(sThesaurusName);
		
		Iterator iter = keywords.iterator();		
		while(iter.hasNext()){
			KeywordBean keyword = (KeywordBean)iter.next();
			thesaurus.removeElement(keyword);			
		}
		
		Element elResp = new Element(Jeeves.Elem.RESPONSE);
		// ajout des parametres necessaires pour le service thesaurus.edit
//		elResp.addContent(new Element("pTypeSearch").setText("0"));
//		elResp.addContent(new Element("pKeyword").setText("*"));
//		elResp.addContent(new Element("pNewSearch").setText("true"));
//		elResp.addContent(new Element("pThesauri").setText(sThesaurusName));		
//		elResp.addContent(new Element("pNbResPerPage").setText("10"));
//		elResp.addContent(new Element("mode").setText("edit"));
		return elResp;
	}
}

//=============================================================================

